A waveguide display assembly includes a flat waveguide; a passage filter layer, which is divided into a plurality of area segments, which can be switched to light passage independently of each other; an image-generating unit, which is configured to generate different 2D images, each of which is intended only for one eye of a user for autostereoscopic 3D presentation, and to couple the 2D images into the waveguide in the form of collimated light beams, the propagation directions of which correspond to individual pixels; and a control unit, which is configured to control the image-generating unit and the passage filter layer such that only one or a subset of the area segments is switched to light passage at a time and, synchronously therewith, the image-generating unit generates only one image area segment of the 2D image intended for one eye of the user.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The waveguide display assembly according to claim 1, wherein the light is couplable laterally into the waveguide at a front face of the waveguide.
4. The waveguide display assembly according to claim 1, wherein the passband filter layer is divided into three or more area segments in a longitudinal direction of the light-emitting surface, wherein the longitudinal direction corresponds to a horizontal direction of eyeboxes predefined for the eyes of the user.
5. The waveguide display assembly according to claim 1, wherein the light-emitting surface in a longitudinal direction of the light-emitting surface has a light-emission efficiency gradient, such that an essentially uniformly illuminated 2D image is generated in an entire eyebox predefined for a respective eye, and the longitudinal direction corresponds to a horizontal direction of eyeboxes predefined for the eyes of the user.
10. The autostereoscopic 3D head-up display device according to claim 9, wherein the at least partially transparent reflection pane is a windscreen of a vehicle.
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July 8, 2021
June 18, 2024
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